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Why Moist heat sterilization is more effective than Dry heat sterilization?
Wiki User
∙ 13y ago
Mechanism of killing by dry heat
- Dry heat kills the organisms by destructive oxidation of essential cell constituents
- Killing of the most resistant spores by dry heat requires a temperature of about 160 °C for 60 minutes
- Dry heat is employed for glassware; syringes, metal instruments and paper wrapped goods, which are not spoiled by high temperatures.
- It is also used for anhydrous fats, oils and powders that are impermeable to moisture.
Mechanism of killing by moist heat
- Moist heat kills the organisms by coagulating and denaturing their enzymes and structural protein.
- Sterilization by moist heat of the most resistant spores generally requires 121 °C for 15-30 minutes.
- Moist heat is used for the sterilization of culture media, and all other materials through which steam can penetrate
- Moist heat is more effective than dry heat
- Sterilization can be done at lower temperatures in a given time at a shorter duration at the same temperature.
- upon heating wet proteins release free -sh groups and form smaller peptide chains which in turn form new complexes different from the orignal protein molecules
Wiki User
∙ 13y ago
Wiki User
∙ 13y agoMosit heat sterilization is better than dry heat serilization specailly for liquid mideas.
Wiki User
∙ 13y agobecause dry heat transfers heat less effectively to a cool body than moist heat does.
Wiki User
∙ 10y agoYes it is. Dry heat is used when the object (s) being sterilized are heat sentitive. Some say that moist heat will drive the power of sterilization deeper.
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To control microbial growth why use heat?
Heating is the most prominent way to kill microbes. Either moist or dry heat can be applied. Heating readily kills the viruses, bacteria, and fungi. Moist heat is thought to kill more efficiently as by degrading nuleic acids and by denaturing enzymes and other essential proteins. It may also disrupt cell membranes. Exposure to boiling water for 10 minutes is sufficient to destroy vegetative cells and eukaryotic spores. Unfortunately the temprature of boilling water is not high enough to destroy bacterial endospores, which may survives hours of boiling. For this moist heat is used which can carried out at temprature more then 100oC and this require the use of saturated steam under pressure. Steam sterlization can be carried out with an autoclave. A device somewhat like a fancy pressure cooker.
Explain the advantages of DNA replicating exactly?
big succelent earlobes are more moist this way and are nicer to be sucked
Why are some microorganisms more heat resistant than others?
It is in their genetic makeup. Often the more complex microorganisms will be more heat resistant compared to the lower forms.
Why are folded membranes in cells more effective than unfolded membranes?
Folded membranes in cells are more effective because they have more surface area. The wider area of space allows for more activity to occur without damage to the cell because of membrane's resistance.
Do dark socks make more bacteria in a shoe than white socks experiments?
I really don't think it makes a huge difference except for the fact that dark moist places make more bacteria
What are the application and relative advantages and disadvantages of dry heat and moist heat sterilization?
Advantages: 1. It is faster method of sterilization then dry heat method. 2. Additional parameter "pressure" is involved 3. We can easily sterilize the media solution. 4. It faster method of sterilization. Disadvantages: 1. Glass ware might get broken down. 2. Mishandling may lead to serious accident or explosion.
Is disinfection more effective than sterilization?
yes
What is moist heat cooking and how is it used in cooking?
Moist-heat cooking is cooking the food in a moist environment. Ways to do this is by boiling, steaming, and braising. This helps to tenderize the food more than through dry heat cooking.
IS Sterilization is more effective than sanitation because it is a less expensive means of disinfection?
Komal butt is the best! She is in year 7 she is in 7g1 No, sterilization is more effective than sanitation because it kills ALL forms of germs, whereas sanitation only kills a small amount of surface germs.
What are the effects of moist heat on protein?
When moist heat is introduced to a piece of meat, the protein collagen is converted into gelatin(which is also a protein). This makes the meat more soluble in our bodies.
What are the Advantages and disadvantages of heat sterilization on medical equipment?
They are different sterilization methods for medical instruments, consumables, devices and Implantable devices. Depending on the nature of the product to sterilize is the method used.Sterilization can be achieved through application of heat, chemicals, irradiation, high Pressure or filtration.Heat Sterilization is divided in two categories:Dry Heat SterilizationMoist Heat sterilizationDry heat sterilization of an article is one of the earliest forms of sterilization practiced. Dry heat, as the name indicates, utilizes hot air that is either free from water vapour, or has very little of it, and where this moisture plays a minimal or no role in the process of sterilization.Methods Used:Hot air ovenIncineration or BurningFlammingRadiationMicrowaveThe most used in the medical field is "Hot air Oven"Moist Heat Sterilization as the name indicates, utilizes hot air that is heavily laden with water vapour and where this moisture plays the most important role in the process of sterilization.Methods Used:Water bathPasteurization (milk)BoillingSteam SterilizerAutoclaveThe most used in Medical Field is "Autoclave"Hot Air Oven Advantages and Disadvantages.They do not require water and there is not much pressure build up within the oven, unlike an autoclave, making them safer to work with. This also makes them more suitable to be used in a laboratory environment. They are much smaller than autoclaves but can still be as effective. They can be more rapid than an autoclave and higher temperatures can be reached compared to other means. As they use dry heat instead of moist heat, some organisms like prions, may not be killed by them every time.Autoclave Advantages and Disadvantages.Moist heat coagulates the proteins in any organism and this is aided by the water vapour that has a very high penetrating property, leading to their death. It also causes oxidative free radical damage This can even, at high enough temperatures (vide:Autoclave), kill prions.These are widely used to sterilize articles that can withstand high temperatures and not get burnt, like glassware and powders. Linen gets burnt and surgical sharps lose their sharpness.Hope this answer will usefully.surMedical.com Team n
What is the difference between sanitization and sterilization?
Sanitizing is the process of killing and/or removing bacteria and microbes with chemicals. The effectiveness of sanitizing is determined by the chemical(s) used.For example: Plain water is an effective neutral sanitizer for removing most microbes from surfaces. However, it is not effective for killing most bacteria or microbes. Alcohol is effective for killing and removing most bacteria and microbes.Sterilization is the process of killing bacteria and microbes with heat. The effectiveness of sterilization is determined by the level of heat used.Example: 160°F will kill most all bacteria and microbes that are known to be harmful to human life. However, there are microbes that may withstand temperatures up to 867.2°F. This means that it is impractical to achieve 100% sterilization.Common MisconceptionsSanitizing and sterilization are the same. That notion is incorrect. Sanitizing is chemical and sterilization is thermal.That either process is more or less effective than the other. That notion is incorrect. The effectiveness of sanitizing is determined by the chemical(s) used. And the effectiveness of sterilization is determined by the temperature.That 100% sanitation and/or sterilization is practical. That notion is incorrect. There is no process that is capable of killing all life on a treated material, leaving the material undamaged and leaving the material safe to use. As someone once said... "If you can find a substance that is resistant to everything you'll find a form of life that wants to eat it or live in it."
Is radiant heat better than a traditional furnace?
In my opinion, radiant heat is better than a traditional furnace. You have more control over how much heat you want, and where you want the heat. Using radiant heat is also more cost effective.
How many more times heat does methane trap than carbon dioxide?
It is 21 times more effective than carbon dioxide in blocking escaping radiant heat.
What do grasshoppers like more moist or dry grass?
moist
Are radiant heating panels cost effective?
A U.S. Department of Energy sponsored study concluded that radiant heat panels were 52% less expensive to operate than electric baseboard heat and 33% more cost effective air to air heat pumps.
What is moist-heat cooking and how is it used in cooking?
Dry heat cooking is by applying heat directly without using any liquid such as water or wine. However, for Moist heat cooking, it is cooking food use by either hot water or steam. These methods include poaching, simmering, and steaming. It should also be noted that any cooking method using oil (deep frying, sauteing, etc.) is considered dry heat cooking.
